Williams Pharaoh no GI

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Cybercid
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Williams Pharaoh no GI

Post by Cybercid »

Good day, today for no reason all my GI not working
Fuses, connectors, voltage all good. Any idear?
Thanks
Game room:
Bally: PowerPlay, Baby Pac Man, Flash Gordon
Williams: Alien Poker, Solar Fire, Grand lizards,Terminator 2, laser Ball.
Data East: Torpedo Alley, The Simpsons,
Gottlieb: Tag Team, Robo War, Close Encounter, Spring Break, Cleopatra.
Zaccaria: Devil Riders
Custom: Pink Floyd The Wall.
Projects: Stargate, Fish Tales, Genie.
LF: Black Rose, Banzai Run.

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Mrhide
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Re: Williams Pharaoh no GI

Post by Mrhide »

tu as un pharaoh? nice!

as tu essayer de changé une ampoule ? :D
LF: GrooveCoaster Machine, shmups or any PCB, specifically Namco System 1 (Pacmania), let me know what you have!

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Cybercid
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Re: Williams Pharaoh no GI

Post by Cybercid »

Mrhide wrote:
Thu Dec 22, 2022 2:26 pm
tu as un pharaoh? nice!

as tu essayer de changé une ampoule ? :D
J’aurais bien aimé mais j’ai pas eu la chance! Du jour au lendemain plus rien!
Game room:
Bally: PowerPlay, Baby Pac Man, Flash Gordon
Williams: Alien Poker, Solar Fire, Grand lizards,Terminator 2, laser Ball.
Data East: Torpedo Alley, The Simpsons,
Gottlieb: Tag Team, Robo War, Close Encounter, Spring Break, Cleopatra.
Zaccaria: Devil Riders
Custom: Pink Floyd The Wall.
Projects: Stargate, Fish Tales, Genie.
LF: Black Rose, Banzai Run.

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Mrhide
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Joined: Fri Nov 20, 2009 6:59 pm
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Re: Williams Pharaoh no GI

Post by Mrhide »

Le gi est sur un relai ... check ca?


Other Hot Tip/Lucky Seven and System7 General Illumination things to check:

Using a DMM set to AC volts, check for 6.3 volts AC right at the transformer.
The yellow and yellow/white wires are the General Illumination wires. Put a
DMM lead on the yellow transformer wire, and the other DMM lead on the
yellow/white wire.

Measure the GI's 6.3 volts AC at the power supply input plug (two pin plug at
the lower right).

Measure the GI's 6.3 volts AC at the power supply fuse (the fuse is good,
right?).

Measure the GI's 6.3 volts AC at the power supply output plug (the nine pin
.156" molex plug at the lower right, next to the 2 pin plug).

If there is GI power at the input power supply GI plug, but nothing at the
output GI power supply plug, the GI relay (mounted on the power supply with
System7, or on the backbox's bottom floor on BlackOut & Scorpion and early
Black Knight games next to the lamp matrix capacitor) could be the problem.
To check this, disconnect the relay connector; if the relay is shorted/seized
(or the driver board transistor/circuit that turns the relay on has failed), the
GI lights should come on. On System7 games, this is the power supply
connector 3J7. On BlackOut, Scorpion and Black Knights with System6 power
supplies and the GI relay on the backbox floor, just remove the black/red
connector from the wiring harness.

Many system7 games also have 12 volt DC G.I. relays under the playfield (or
even on the insert panel of the backglass), so the CPU board can toggle a
particular G.I. playfield string on and off. These relays have five lugs (center
lug unused). One side of the GI string is interrupted by the relay, so two solid
yellow or purple GI wires go to the relay. The other two lugs are 12 volts
power and the 12 volt ground path back to the driver board TIP122 transistor.
When the relay is not energized, the G.I. relay's switch is normally closed,
allowing G.I. power to pass through the relay. Often the problem with no G.I.
is the lug connectors on these G.I. relay(s). Recrimp new lug connectors or
squeeze the old ones with pliers for a better connection.

G.I. Relay Replacement.
If the G.I. relay has failed or burned, a replacement PC poard mount 24 volt DC 10
amp DPDT relay can be used. The original is a Guardian Electric 1395P series, and a
Mouser equivelant is the NTE R14-11D10-24. Just make sure to get a DC coil relay
and (not the AC). Playfield or backglass insert G.I. relays are 12 volt DC 10 DPST
relays.
LF: GrooveCoaster Machine, shmups or any PCB, specifically Namco System 1 (Pacmania), let me know what you have!

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GILV
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Re: Williams Pharaoh no GI

Post by GILV »

Si c'est le relais, il ne sont pas trop chere les 24 volts.
Je sait que 10 c'est peut-être beaucoup mais le prix est tres bon, free shipping en plus, c'est toujours pratique des relais.
https://www.ebay.com/itm/234638580139?_ ... %3A2047675

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